<template>
    <div>
      <!--    面包屑区域 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
      </el-breadcrumb>

      <!-- 卡片视图区域 -->
      <el-card>
        <el-row :gutter="20">
          <el-col :span="8">
            <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
              <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
            </el-input>
          </el-col>
          <el-col :span="4">
            <el-button type="primary" @click="goAddpage">添加商品</el-button>
          </el-col>
        </el-row>

        <!-- 商品列表区域 -->
        <el-table :data="goodList" border>
          <!-- 索引列 -->
          <el-table-column type="index"></el-table-column>

          <el-table-column label="商品名称" prop="goods_name"></el-table-column>
          <el-table-column label="商品价格（元）" prop="goods_price" width="100px"></el-table-column>
          <el-table-column label="商品重量" prop="goods_weight" width="75px"></el-table-column>
          <el-table-column label="创建时间" prop="add_time" width="190px">
            <template slot-scope="scope">
              {{ scope.row.add_time | dataFormat }}
            </template>
          </el-table-column>
          <el-table-column label="操作">
            <template slot-scope="scope">
              <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.goods_id)">编辑</el-button>
              <el-button size="mini" type="warning" icon="el-icon-delete" @click="removeParams(scope.row.goods_id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>

        <!-- 页面显示区域 -->
        <div class="block">
          <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[5, 10, 15, 20]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total"></el-pagination>
        </div>
      </el-card>

    </div>
</template>

<script>
export default {
  name: 'List',
  data() {
    return {
      // 获取商品列表数据对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品信息
      goodList: [],
      // 页面总数
      total: 0,
      // 控制编辑商品信息对话框的显示与隐藏
      editDialogVisible: false,
      // 控制添加商品信息对话框的显示与隐藏
      addDialogVisible: false
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 获取商品列表信息
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表数据失败')
      }
      this.goodList = res.data.goods
      this.total = res.data.total
      console.log(this.goodList)
    },
    // 监听 pagesize 改变事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听 页码值 改变事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    goAddpage() {
      this.$router.push('/goods/add')
    },
    // 开启编辑商品的对话框
    showEditDialog(id) {
      this.editDialogVisible = true
    },
    // 根据商品Id，确认删除商品
    async removeParams(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除商品！')
      }

      // 删除商品的业务逻辑
      const { data: res } = await this.$http.delete('goods/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('删除商品失败！')
      }
      this.$message.success('删除商品成功！')
      this.getGoodsList()
    }
  }
}
</script>

<style scoped lang="less">
  .el-table{
    margin-top: 20px;
  }
</style>
